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AR# 32530

11.1 Spartan-3A Place - Known Issue where Phase 4.2 crashes due to loadless clock buffer


My design is crashing during Placement Phase 4.2.  


Are there any known issues to explain this failure?


There is a known issue where the clock placer (Phase 4.2) crashes if there is a BUFG in the design that is loadless.  


This problem will be fixed in ISE version 11.2. Meanwhile, either remove the loadless BUFG, or ensure that the BUFG has loads.

AR# 32530
Date Created 04/21/2009
Last Updated 05/23/2014
Status Archive
Type General Article